All users are considered employees. Before doing anything else, all employees have to first specify their manager. 

Any one with reportees (who has been set by someone as their manager) is considered a manager. 

Administrator - The person who added AttendanceBot to the Slack team is by default the team administrator. An administrator can control several team wide settings and is responsible for managing the subscription. To change this please reach the support team by saying "dialm". An administrator can add more admins as required by typing 'settings'.

HR - This is a role typically assigned to the HR manager in the team who can has extended reporting capabilities for across the entire company. By default a team does not have an HR person. To set one or more HR people this please reach the support team by saying "dialm".